package com.wf.classRoomTest.decorator;

public class Example{
  String str=new String("good");
  char[]ch={'a','b','c'};
  public static void main(String args[]){
    Example ex=new Example();
    ex.change(ex.str,ex.ch);
    System.out.print(ex.str+" and ");
    System.out.print(ex.ch);
  }
  public void change(String str,char ch[]){
    System.out.println(str);
    str="test ok";
    System.out.println(str);
    ch[0]='g';
  }
}
